IPC Fuzzer

A Chromium IPC fuzzer is under development by aedla and tsepez. The fuzzer lives under src/tools/ipc_fuzzer/ and is running on ClusterFuzz. A previous version of the fuzzer was a simple bitflipper, which caught around 10 bugs. A new version is doing smarter mutations and generational fuzzing. To do so, each ParamTraits<Type> needs a corresponding FuzzTraits<Type>. Feel free to contribute.